In a medium pan, sauté onions with light olive oil and a sprinkling of salt and pepper until caramelized.

In a large bowl, mix together the caramelized onions with the remainder of the burger ingredients. Using your hands, mash and knead until everything is thoroughly combined. Divide “burger meat” into 4 equal portions.

Oil your hands with a little olive oil and make patties that are about 1 inch thick. Place them on a plate lined with paper towel and cover them with plastic wrap. Refrigerate for 30 minutes.

Cover the bottom of a skillet with olive oil. Cook the patties 2 to 3 minutes per side until lightly browned.